GRADE SUPPLEMENT Set B2 Algebra: Multiplication Comparisons & Equations Includes H Activity 1: Farmer Worth’s Crops Extension H Independent Worksheet 1: Multiplication Comparisons & Equations H Independent Worksheet 2: Multiplicative Comparisons with Coins B2.1 B2.3 B2.5 Skills & Concepts H Interpret a multiplication equation as a comparison H Represent verbal statements of multiplicative comparisons as multiplication equations P201304 Bridges in Mathematics Grade Supplement Set B2 Algebra: Multiplication Comparisons & Equations The Math Learning Center, PO Box 12929, Salem, Oregon 97309 Tel 800 575–8130 © 2013 by The Math Learning Center All rights reserved Prepared for publication on Macintosh Desktop Publishing system Printed in the United States of America P201304 The Math Learning Center grants permission to classroom teachers to reproduce blackline masters in appropriate quantities for their classroom use Bridges in Mathematics is a standards-based K–5 curriculum that provides a unique blend of concept development and skills practice in the context of problem solving It incorporates the Number Corner, a collection of daily skill-building activities for students The Math Learning Center is a nonproit organization serving the education community Our mission is to inspire and enable individuals to discover and develop their mathematical conidence and ability We offer innovative and standards-based professional development, curriculum, materials, and resources to support learning and teaching To ind out more, visit us at www.mathlearningcenter.org Set B2 Multiplication Comparisons & Equations Set B2 H Activity ACTIVITY Farmer Worth’s Crops Extension Overview You’ll Need After students complete Farmer Worth’s Crops Student Book page invite them to interpret a multiplication equation as a comparison and a verbal statement of a comparison as an equation on a white board or journal page H Once Upon a Dime by Nancy Kelly Allen H Farmer Worth’s Crops Student Book page 38 H Whiteboards or journal page Skills & Concepts H Interpret a multiplication equation as a comparison (CCSS 4.OA.1) H Represent verbal statements of multiplicative comparisons as multiplication equations (CCSS 4.OA.1) Instructions for Farmer Worth’s Crops Extension Have students complete Farmer Worth’s Crops Student Book page Pose the following problems orally to the class Ask students to write the comparison as a multiplication equation on a white board with markers or in a journal page Do the first problem together • a $5.00 is 100 times as much as cents • b $5.00 is also times as much as 100 pennies • c $10.00 is _ times as much as 10 cents • d $10.00 is also 10 times as much as _ • e $25.00 is _ times as much as 25 cents • f $25.00 is also 25 times as much as _ • g $100 is _ times as much as $1 Invite students to share their equation and explain their reasoning with the class PROBLEM ANSWER EQUATION a $5.00 is 100 times as much as cents 100 ì 5Â = $5.00 b $5.00 is also times as much as 100 pennies ì 100Â = $5.00 c $10.00 is _ times as much as 10 cents 100 100 ì 10Â = $10.00 d $10.00 is also 10 times as much as _ $1.00 10 × $1.00 = $10.00 e $25.00 is _ times as much as 25 cents 100 100 × 25¢ = $25.00 f $25.00 is also 25 times as much as _ $1.00 25 × $1 = $25.00 g $100 is _ times as much as $1 100 100 × $1 = $100 © The Math Learning Center Bridges in Mathematics Grade Supplement • B2.1 Set B2 Multiplication Comparisons & Equations Activity Farmer Worth’s Crops Extension (cont.) Repeat steps and using the multiplicative comparisons with money listed below PROBLEM ANSWER EQUATION a $15.00 is _ times as much as $5 3 × $5.00 = $15.00 b $15.00 is also times as much as _ $3.00 × $3.00 = $15.00 c $1.00 is _ times as much as 25 cents 4 ì 25Â = $1.00 d $1.00 is also 25 times as much as _ $0.04 25 × $0.04 = $1.00 e $1.00 is _ times as much as 20 cents 5 ì 20Â = $1.00 f $1.00 is also 20 times as much as _ $0.05 20 ì 5Â = $1.00 CHALLENGE Challenge students to write their own multiplicative comparison with money Suggest they use international money (like Australian) that deals with dollars, or other currency like pounds/pesos Students can locate necessary information on the internet Have students share their problems and invite the class to write equations to solve them B2.2 • Bridges in Mathematics Grade Supplement © The Math Learning Center Set B2 Multiplication Comparisons & Equations Blackline Use anytime after Unit 2, Session 13 NAME DATE Set B2 H Independent Worksheet INDEPENDENT WORKSHEET Multiplication Comparisons & Equations Choose at least of the problems below to solve in your journal Record each problem number then write an equation to show your work Ben is three years old His brother is four times older How old is his brother? Anna’s dad is 40 He is eight times her age How old is Anna? Jose’s puppy joined the family months ago His older dog has been with the family five times that long How long has the older dog been with the family? Our class has recess for 15 minutes each day The first graders have recess four times longer How long they have recess? Sally washes her hands for 10 seconds before lunchtime I wash my hands times longer How long I wash my hands? Rene has six times more baseball cards than Joey If Joey has cards, how many does Rene have? I collected times as many pieces of candy from the piñata as Jolie If she collected 7, how many did I get? Caleb takes six times longer to clean his room than it takes his friend, John If it takes John ten minutes, how long does it take Caleb? © The Math Learning Center Bridges in Mathematics Grade Supplement • B2.3 B2.4 • Bridges in Mathematics Grade Supplement © The Math Learning Center Set B2 Multiplication Comparisons & Equations Blackline Use anytime after Unit 2, Session 13 NAME DATE Set B2 H Independent Worksheet INDEPENDENT WORKSHEET Multiplication Comparisons with Coins Write a multiplication equation for each problem Then write a multiplicative comparison to show how much each group of coins is worth Group of Coins ex a nickels Multiplication Equation Multiplicative Comparison x 5¢ = 25¢ 25¢ is times as much as a nickel 15 nickels b 20 dimes c 30 dimes d quarters e 12 quarters f 17 quarters CHALLENGE Write your own problem Tell what coin is used and how many coins are in the group Write a multiplication equation and multiplicative comparison © The Math Learning Center Bridges in Mathematics Grade Supplement • B2.5 B2.6 • Bridges in Mathematics Grade Supplement © The Math Learning Center ... • B2. 3 B2. 4 • Bridges in Mathematics Grade Supplement © The Math Learning Center Set B2 Multiplication Comparisons & Equations Blackline Use anytime after Unit 2, Session 13 NAME DATE Set B2. .. them B2. 2 • Bridges in Mathematics Grade Supplement © The Math Learning Center Set B2 Multiplication Comparisons & Equations Blackline Use anytime after Unit 2, Session 13 NAME DATE Set B2 H... and teaching To ind out more, visit us at www.mathlearningcenter.org Set B2 Multiplication Comparisons & Equations Set B2 H Activity ACTIVITY Farmer Worth’s Crops Extension Overview You’ll Need